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2025-07-29arm: stm32mp: replace space by tab in sys_proto.hPatrice Chotard
Cosmetic update to replace space by tab in sys_proto.h Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-07-29ARM: stm32mp: Add STM32MP23 supportPatrice Chotard
Add STM32MP23 support which is a cost optimized of STM32MP25. More details available at: https://www.st.com/en/microcontrollers-microprocessors/stm32mp2-series.html Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-07-29ARM: stm32: Add STM32MP13xx SPL hardware initializationMarek Vasut
Add hardware initialization for the STM32MP13xx in SPL. This is similar to STM32MP15xx except the code has to enable MCE to bring DRAM controller up later. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
2025-07-29arm: stm32mp2: add multifunction timer support for stm32mp25Cheick Traore
Add support for STM32MP25 SoC. Identification and hardware configuration registers allow to read the timer version and capabilities (counter width, ...). So, rework the probe to avoid touching ARR register by simply read the counter width when available. This may avoid messing with a possibly running timer. Also add useful bit fields to stm32-timers header file. Signed-off-by: Cheick Traore <cheick.traore@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-06-11ARM: stm32: Fix DBGMCU macro on STM32MP13xxMarek Vasut
The DBGMCU block is available at address 0x50081000 both on STM32MP13xx and on STM32MP15xx . There is no reason to limit the DBGMCU macro being set only on STM32MP15xx , remove the ifdeffery. Signed-off-by: Marek Vasut <marek.vasut@mailbox.org> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-06-11ARM: stm32: Fix SYSRAM size on STM32MP13xxMarek Vasut
The STM32MP13xx has only 128 kiB of SYSRAM starting at address 0x2ffe0000 . The STM32MP15xx has 256 kiB of SYSRAM starting at address 0x2ffc0000 . Make sure both SoCs configure ARMV7_SECURE_BASE correctly . Define the SYSRAM base in stm32.h to be consistent with the STM32MP15xx macro. Signed-off-by: Marek Vasut <marek.vasut@mailbox.org> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-04-25arm: stm32mp: add helper function stm32mp_is_closed()Patrick Delaunay
Add the helper function stm32mp_is_closed() to check the "closed" state in product life cycle, when product secrets have been provisioned into the device, by "secure secret provisioning" tools (SSP) for example. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-04-25arm: stm32mp: fix package IDs for stm32mp25Patrice Chotard
Fix package IDs for stm32mp25. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-04-25arm: stm32mp: implement new STM32MP25 revision ID systemPatrick Delaunay
The STM32MP25 revision ID are now defined with the OTP102, this patch implements this new system. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Patrice CHOTARD <patrice.chotard@foss.st.com>
2025-04-25arm: stm32mp: add boot_mode support for STM32MP25Patrick Delaunay
Add support of all the boot mode supported by STM32MP25x family with information provided by TF-A in backup register Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2025-04-25ARM: stm32mp: add RIFSC system bus driver for STM32MP25Patrick Delaunay
This driver is checking the access rights of the different peripherals connected to the RIFSC bus. If access is denied, the associated device is not binded. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Cover-letter: Enable OF_UPSTREAM for STM32 and STi platforms This series is enabling OF_UPSTREAM flag for STM32 MCU's, MPU's and STi platforms. For some boards, some defconfig and DT update are needed to keep the same functional level. The major impact concerns MPU's platform with introduction of STM32 System Bus. END Series-version: 2 Series-changes: 2 - Replace LOG_CATEGORY UCLASS_SIMPLE_BUS by UCLASS_NOP in both /arch/arm/mach-stm32mp/stm32mp2/rifsc.c and /arch/arm/mach-stm32mp/stm32mp1/etzpc.c. - Update board/st/stm32mp1/MAINTAINERS. - Fix DSI clock ssetting.
2025-04-25ARM: stm32mp: add ETZPC system bus driver for STM32MP1Lionel Debieve
This driver is checking the access rights of the different peripherals connected to the ETZPC bus. If access is denied, the associated device is not bound. Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com> Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2025-03-12mach-stm32: add multifunction timer driver supportCheick Traore
Add support for STM32MP timer multi-function driver. These timers can be use as counter, trigger or pwm generator. This driver will be used to manage the main resources of the timer to provide them to the functionnalities which need these ones. Signed-off-by: Cheick Traore <cheick.traore@foss.st.com> Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2024-09-03stm32mp: allow calling optee_get_reserved_memory() from U-BootSughosh Ganu
The optee_get_reserved_memory() function returns the OP-TEE base address and size. The function gets these values from the FDT. Currently, this function is defined only to be called in the SPL phase. Move this function to a place where it can be invoked from the main U-Boot phase, where it will be used to compute the ram_top address. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2024-01-19stm32mp2: Fix CONFIG_STM32MP25X flag usagePatrice Chotard
"#if" was used instead of "#ifdef" Fixes: 01a701994b05 ("stm32mp2: initial support") Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2024-01-19arm: Rename STM32MP15xPatrick Delaunay
CONFIG options must not use lower-case letter. Convert this and related ones to upper case. Signed-off-by: Simon Glass <sjg@chromium.org Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2024-01-19arm: Rename STM32MP13xPatrick Delaunay
CONFIG options must not use lower-case letter. Convert this and related ones to upper case. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>
2024-01-19stm32mp: activate the command stboard for stm32mp25 boardsPatrick Delaunay
Activate the command stboard for stm32mp25 STMicroelectronics boards, add the default used OTP identifier and the associated board identifier: - stm32mp25xx-ev1 = MB1936 - stm32mp25xx-dk = MB1605 Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2024-01-19stm32mp: add setup_serial_number for stm32mp25Patrice Chotard
Add support of serial number for stm32mp25, gets from OTP with BSEC driver. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>
2024-01-19stm32mp: bsec: add support of stm32mp25Patrick Delaunay
Add support of BSEC for STM32MP25x family to access OTP. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2023-11-20Merge tag 'v2024.01-rc3' into nextTom Rini
Prepare v2024.01-rc3
2023-11-13Merge tag 'u-boot-stm32-20231113' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-stm into next Introduce STM32MP2 SoCs family support Add STM32MP257F-EV1 board [trini: Adjust some includes] Signed-off-by: Tom Rini <trini@konsulko.com>
2023-11-13stm32mp2: initial supportPatrice Chotard
Add initial support for STM32MP2 SoCs family. SoCs information are available here : https://www.st.com/content/st_com/en/campaigns/microprocessor-stm32mp2.html Migrate all MP1 related code into stm32mp1/ directory Create stm32mp2 directory dedicated for STM32MP2 SoCs. Common code to MP1, MP13 and MP25 is kept into arch/arm/mach-stm32/mach-stm32mp directory : - boot_params.c - bsec - cmd_stm32key - cmd_stm32prog - dram_init.c - syscon.c - ecdsa_romapi.c For STM32MP2, it also : - adds memory region description needed for ARMv8 MMU. - enables early data cache before relocation. During the transition before/after relocation, the MMU, initially setup at the beginning of DDR, must be setup again at a correct address after relocation. This is done in enables_caches() by disabling cache, force arch.tlb_fillptr to NULL which will force the MMU to be setup again but with a new value for gd->arch.tlb_addr. gd->arch.tlb_addr has been updated after relocation in arm_reserve_mmu(). Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2023-11-10stm32mp1: read auth stats and boot_partition from tampIgor Opaniuk
Obtain from TAMP backup register information about image authorization status and partition id used for booting. Store this info in environmental variables ("boot_auth" and "boot_part" correspondingly). Image authorization supported values: 0x0 - No authentication done 0x1 - Authentication done and failed 0x2 - Authentication done and succeeded These values are stored to TAMP backup register by Trusted Firmware-A [1]. Testing: STM32MP> print boot_part boot_part=1 STM32MP> print boot_auth boot_auth=2 [1] https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/commit/?h=refs/heads/integration&id=ab2b325c1ab895e626d4e11a9f26b9e7c968f8d8 Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io> Co-developed-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-09-24common: Drop linux/printk.h from common headerSimon Glass
This old patch was marked as deferred. Bring it back to life, to continue towards the removal of common.h Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass <sjg@chromium.org>
2023-06-16stm32mp: add support of STM32MP15x Rev.YPatrick Delaunay
Add support of STM32MP15x Rev.Y for the Silicon revision REV_ID = 0x2003. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-06-16ARM: stm32: Add IWDG handling into PSCI suspend codeMarek Vasut
In case the IWDG is enabled by either U-Boot or Linux, the IWDG can never be disabled again. That includes low power states, which means that if the IWDG is enabled, the SoC would reset itself after a while in suspend via the IWDG. This is not desired behavior. It is possible to enable IWDG pre-timeout IRQ which is routed into the EXTI, and use that IRQ to wake the CPU up before the IWDG timeout is reached and reset is triggered. This pre-timeout IRQ can be used to reload the WDT and then suspend the CPU again every once in a while. Implement this functionality for both IWDG1 and IWDG2 by reading out all the unmasked IRQs, comparing the list with currently pending IRQs in GICv3: - If any IRQ is pending and it is NOT IWDG1 or IWDG2 pre-timeout IRQ, wake up and let OS handle the IRQs - If IWDG1 or IWDG2 IRQ is pending and no other IRQ is pending, ping the respective IWDG and suspend again This does not seem to have any adverse impact on power consumption in suspend. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2023-06-16stm32mp: stm32prog: Remove tee_detected from stm32prog_data structPatrice Chotard
As stm32prog_get_tee_partitions() is no more used, remove tee_detected boolean from stm32prog_data struct and all code using it. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-01-13ARM: stm32: Factor out save_boot_paramsMarek Vasut
The STM32MP15xx platform currently comes with two incompatible implementations of save_boot_params() weak function override. Factor the save_boot_params() implementation into common cpu.c code and provide accessors to read out both ROM API table address and DT address from any place in the code instead. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Marek Vasut <marex@denx.de>
2023-01-12stm32mp: Add OP-TEE support in bsec driverPatrick Delaunay
When OP-TEE is used, the SMC for BSEC management are not available and the STM32MP BSEC pseudo TA must be used (it is mandatory for STM32MP13 and it is a new feature for STM32MP15x). The BSEC driver try to open a session to this PTA BSEC at probe and use it for OTP read or write access to fuse or to shadow. This patch also adapts the commands stm32key and stboard to handle the BSEC_LOCK_PERM lock value instead of 1. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-10-31FWU: STM32MP1: Add support to read boot index from backup registerSughosh Ganu
The FWU Multi Bank Update feature allows the platform to boot the firmware images from one of the partitions(banks). The first stage bootloader(fsbl) passes the value of the boot index, i.e. the bank from which the firmware images were booted from to U-Boot. On the STM32MP157C-DK2 board, this value is passed through one of the SoC's backup register. Add a function to read the boot index value from the backup register. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
2022-07-12stm32mp: add support of STM32MP13x Rev.YPatrick Delaunay
Add support of STM32MP13x Rev.Y for the Silicon revision REV_ID = 0x1003. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-17stm32mp: stpmic1: remove the debug unit request by debuggerPatrick Delaunay
Depending on backup register value, U-Boot SPL maintains the debug unit powered-on for debugging purpose; only BUCK1 is required for powering the debug unit, so revert the setting for all the other power lanes, except BUCK3 that has to be always on. To be functional this patch requires a modification in the debugger ,openocd for example, to update the STM32MP15 backup register when it is required to debug SPL after reset. After deeper analysis this behavior will be never supported in tools so the associated code, will be never used and the associated code can be removed. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-17arm: stm32mp: support 2 MAC address for STM32MP13Patrick Delaunay
Add support of several MAC address in OTP (3 32bits OTP word for 2 MAC address) for SOCs in STM32MP13x family: STM32MP133 and STM32MP135. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-17arm: stm32mp: add support of STM32MP13xPatrick Delaunay
Introduce the code in mach-stm32mp and the configuration file stm32mp13_defconfig for the new STM32MP family. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-17arm: stm32mp: move code for STM32MP15xPatrick Delaunay
Move code and defines only needed for CONFIG_STM32MP15x in stm32mp15x.c when low level init without TFABOOT is supported. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-06-17arm: stm32mp: move the get_otp helper function in bsecPatrick Delaunay
As the get_otp() helper function in bsec are common for all STM32MP family, move this function in bsec driver Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-05-10ARM: stm32mp: correctly handle Silicon revisionPatrick Delaunay
Handle correctly the silicon revision = REV_ID[15:0] of Device Version and the associated device marking, A to Z on STMicroelectronics STM32MP SOCs. This patch prepare the introduction of next STM32MP family, with STM32MP13x Rev.Z for REV_ID = 1.1. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
2022-03-15stm32mp: psci: Implement PSCI system suspend and DRAM SSRMarek Vasut
Implement PSCI system suspend and placement of DRAM into SSR while the CPUs are in suspend. This saves non-trivial amount of power in suspend, on 2x W632GU6NB-15 ~710mW. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Marek Vasut <marex@denx.de> Cc: Patrick Delaunay <patrick.delaunay@foss.st.com> Cc: Patrice Chotard <patrice.chotard@foss.st.com>
2021-11-10gpio: stm32: create include file for driver private dataPatrick Delaunay
The stm32 gpio driver private data are not needed in arch include files, they are not used by code except for stm32 gpio and pincontrol drivers, using the same IP; the defines for this IP is moved in a new file "stm32_gpio_priv.h" in driver/gpio. This patch avoids to have duplicated file gpio.h for each SOC in MPU directory mach-stm32mp and in each MCU directory arch-stm32* and allows to remove CONFIG_GPIO_EXTRA_HEADER for all STM32. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2021-08-16stm32mp1: stm32prog: remove stm32prog_get_tee_partitions with FIPPatrick Delaunay
The MTD tee partitions used to save the OP-TEE binary are needed when TF-A doesn't use the FIP container to load binaries. This patch puts under CONFIG_STM32MP15x_STM32IMAGE flag the associated code in U-Boot binary and prepare the code cleanup when CONFIG_STM32MP15x_STM32IMAGE support will be removed after TF-A migration to FIP support. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2021-07-27arm: stm32mp: Implement support for TZC 400 controllerAlexandru Gagniuc
The purpose of this change is to allow configuring TrustZone (TZC) memory permissions. For example, OP-TEE expects TZC regions to be configured in a very particular way. The API presented here is intended to allow exactly that. UCLASS support is not implemented, because it would not be too useful. Changing TZC permissions needs to be done with care, so as not to cut off access to memory we are currently using. One place where we can use this is at the end of SPL, right before jumping to OP-TEE. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-07-16stm32mp: use device sequence number in boot_instance variablePatrick Delaunay
Use the device sequence number in boot_instance variable and no more the SDMMC instance provided by ROM code/TF-A. After this patch we don't need to define the mmc alias in device tree, for example: mmc0 = &sdmmc1; mmc1 = &sdmmc2; mmc2 = &sdmmc3; to have a correct mapping between the ROM code boot device = "${boot_device}${boot_instance}" and the MMC device in U-Boot. With this patch the 'mmc0' device (used in mmc commands) is always used when only one instance sdmmc is activated in device tree, even if it is only the sdmmc2 or sdmmc3. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2020-10-21arm: stm32: cleanup arch gpio.hPatrick Delaunay
Cosmetic update of gpio.h: - remove enumerate: stm32_gpio_port, stm32_gpio_pin because STM32_GPIO_XXX values are unused - move STM32_GPIOS_PER_BANK in stm32_gpio.c as its value is IP dependent and not arch dependent No functional change as number of banks and number of gpio by banks is managed by device tree since since DM migration and commit 8f651ca60ba1 ("pinctrl: stm32: Add get_pins_count() ops"). Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07arm: stm32mp: protect DBGMCU_IDC access with BSECPatrick Delaunay
As debugger must be totally closed on Sec closed chip, the DBGMCU_IDC register is no more accessible (self hosted debug is disabled with OTP). This patch adds a function bsec_dbgswenable() to check if the DBGMCU registers are available before to access them: BSEC_DENABLE.DBGSWENABLE = self hosted debug status. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-07-07arm: stm32mp: add weak function to save vddcorePatrick Delaunay
Add a weak functions to save the vddcore voltage value provided in the OPP node when the clock tree is initialized. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-05-18common: Drop linux/bitops.h from common headerSimon Glass
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18Use __ASSEMBLY__ as the assembly macrosSimon Glass
Some places use __ASSEMBLER__ instead which does not work since the Makefile does not define it. Fix them. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-14stm32mp: stm32prog: adapt the MTD partitionsPatrick Delaunay
Dynamically adapt the MTD partitions in NOR/NAND/SPI-NAND when stm32prog command detects in the parsed flash layout files: - a fsbl partition in NOR. - a tee partition in NOR/NAND/SPI-NAND Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2020-05-14stm32mp: add the command stm32progPatrick Delaunay
Add a specific command stm32prog for STM32MP soc family witch allows to program the boot devices with the tool STM32CubeProgrammer (http://www.st.com/STM32CubeProg). This command uses the same UART STM32 protocol than MCU STM32 with or USB with DFU protocol v1.1 (ithe MCU ST extension are no supported). The executed actions are based on a tab separated value file with a stm32 header, the FlashLayout file (https://wiki.st.com/stm32mpu/wiki/STM32CubeProgrammer_flashlayout). This file is parsed by the U-Boot command to: - initialize the devices - create the partition table on each device - initialize the DFU backend to access to not volatile memory (NOR/NAND/SD/eMMC) or to virtual device (OTP/PMIC) Up to STM32PROG_MAX_DEV (5) devices can be updated with a FlashLayout. The communication between U-Boot and STM32CubeProgrammer is done with the specific alternate configuration (see "AN5275: USB DFU/USART protocols used in STM32MP1 Series bootloaders" for details). The command stm32prog is executed when a boot from USB is detected (selected with bootpins) and we can program the boot devices with a simple command (on Windows or Linux): PC $> STM32_Programmer_CLI -c port=usb1 -w flaslayout.tsv 1/ the ROM code loads TF-A in embedded RAM (DFU or uart) 2/ TF-A loads flashlayout file and U-Boot in DDR (DFU or uart) 3/ U-Boot executes the stm32prog command (DFU or uart) Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>